71.   This stuff has repeatedly proven its worth, at least to me.

72.   To prove the worth of the product, the cheese is actually served to audience members during the intermission.

73.   Two months ago, Johnson said Dreifort needed to prove his worth.

74.   Under that scenario, professors would have to prove their worth every time they came up for a contract renewal.

75.   Trying to show they belonged in the championship series, the Nets resembled the scrappy junior varsity squad trying to prove their worth to the varsity.

76.   Prove your worth to the organisation.

77.   After suffering from a virus during the early season, his peak form came late, and he wanted one extra test to prove his worth.

78.   After failing in his first innings with a duck, he is proving his worth in these later stages.

79.   As the two parties roll into an election year, they have scrambled to prove their worth on the popular topic of education.

80.   Argus hopes the contest will prove the worth of its product.